Zn改性HZSM-5催化生物轻油临氢芳构化制备SAF芳烃组分
韩孝坤 , 韩兆皓 , 郭艳霞 , 李建平 , 刘京京 , 梁宇豪 , 刘宾 , 柴永明
现代化工 ›› 2026, Vol. 46 ›› Issue (8) : 151 -157.
Zn改性HZSM-5催化生物轻油临氢芳构化制备SAF芳烃组分
Zn-modified HZSM-5 catalyst for hydroaromatization of bio-light oil to produce SAF aromatic components
针对油脂加氢(HEFA)制航煤缺乏芳烃及副产物生物轻油(C5~C8)附加值低的问题,制备了不同硅铝比的Zn/HZSM-5(5% Zn)催化剂,揭示了硅铝比对孔道与酸性质的调控机制,并评价了其对模型化合物及工业生物轻油的催化性能。结果表明,硅铝比为60时催化剂孔容(0.19 cm3/g)与B/L酸比(0.17)最优。在530℃、1 MPa工况下,工业轻油转化率100%,芳烃收率47%,液体产物芳烃选择性99%。该技术路径为可持续航空燃料(SAF)组分调控及副产物高值化提供了新方法。
To address the issues of seal shrinkage and failure caused by the lack of aromatics in jet fuel produced via hydroprocessing of fats and oils (HEFA),as well as the low value-added nature of the byproduct bio-light oil (C5-C8),this study aims to efficiently convert the light oil into bio-based aromatics using aromatization technology.A series of Zn/HZSM-5 (5 wt% Zn) catalysts with different Si/Al ratios were prepared.The regulatory mechanism of the Si/Al ratio on the pore structure and acid properties was revealed,and the catalytic performance of the catalysts on model compounds and industrial bio-light oil was evaluated.The results indicate that when the Si/Al ratio is 60,the catalyst exhibits optimal pore volume (0.19 cm3/g) and B/L acid ratio (0.17).Under operating conditions of 530℃ and 1 MPa,the conversion rate of industrial light oil reached 100%,the aromatics yield was 47%,and the selectivity of liquid aromatics reached as high as 99%.This technical pathway provides a new method for the component regulation of sustainable aviation fuel (SAF) and the high-value utilization of byproducts.
生物轻油 / Zn/HZSM-5催化剂 / 芳构化 / 硅铝比
bio-light oil / Zn/HZSM-5 catalyst / aromatization / Si/Al ratio
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